13
P/N 1010751 Rev. G 01/08
McDonald’s
Multi-purpose steaMer Mps-250
MaiNteNaNCe (continued)
Monthly cont’d
4. Use an abrasive, plastic bristle cleaning brush
and small scraper to remove deposits from the
generator surface.
5. If necessary, pour McD Delimer solution (not
supplied) onto the generator surface and allow
to soak according to the product’s instructions.
Remove the delimer solution from the generator
and rinse with clear water to remove traces of
delimer.
Note: Be sure to follow the delimer manufactur-
er’s directions for proper mixture and use.
6. Clean the Spatula, Top Cover, and Diffuser in hot,
detergent water, then rinse in clear water, and
allow to air dry:
7. Clean unit surface with a hot, clean, damp cloth
(not dripping wet) and wipe dry.
Note: the top Cover, diffuser, and spatula must
be installed in this specific order. Failure to do so
may result in damage to the equipment.
8. Re-install all parts ensuring the Top Cover
is secure.
9. Plug in power cord and water line (if applicable).
Note: to ensure proper steaming characteristics,
some mineral deposits must be present on genera-
tor casting. if during cleaning, the casting does
become free of mineral deposits, add ordinary tap
water (non reverse osmosis or ionic filter system)
to casting and allow to boil off.
Note: in soft water areas, it may be necessary to
add a small amount of lime to generator to “sea-
son” it (see seasoning formula). this will ensure
proper steaming characteristics by producing a
thin coating of mineral deposits on the casting.
Seasoning Formula: Mix one ounce (28 grams/33 ml)
baking soda, and one ounce (28 grams/33ml) lime in
one quart (one liter) of water.
Pour 1/4” deep of seasoning mixture into a cold gen-
erator. Turn the unit on. After mixture is converted
to steam, the remaining loose powder is removed and
generator cleaned.
Flushing/Cleaning Water solenoid
Note: Based on the water conditions in your area.
Flushing/Cleaning of the Water solenoid should be
done at the same time as the “Cleaning the steam
Generator” per the PM Card #Xt 101. this proce-
dure is done monthly but based on water condi-
tions could be done weekly or daily.
To perform the water Solenoid flushing/cleaning on the
Multi-Purpose Steamer, Model MPS 250, you will have
to reprogram the “SHOT” time on the Product Menu
Button #1.
Currently the standard “sHot” setting is
0.70 second.
1. Follow the instructions in the Programming
section to change the “SHOT” setting to
2.5 seconds.
This is the maximum time that can be programmed.
2. Make sure the steamer is up to operating
temperature.
3. Run one cycle using button #1.
• You will get 5 water shots in 30 seconds
• The longer “SHOT” time will generate a larger
volume of water flowing through the solenoid.
This increased volume of water will flush/clean
the water Solenoid Base.
Note: this volume of water will flood the casting.
4 When the cycle is completed, you may want to
run a second cycle.
• Wait until all the water has turned to steam before
using or turning the Steamer off.
Note: it is very important to reprogram the water
“shot” back to it’s 0.70 second setting or original
setting.
the Multipurpose steamer can be
programmed to provide a much larger
volume of water per water shot to flush/
clean the solenoid Base.
